Electric switch.



W.l G. FEET.

y ELECTRIC SWITCH.

APPLICATION FILED nza. 1. 1913.

5 wu@ wtoz UNITED STATES FATENT OFFICE WILBUR G. PEET, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELEC- TRIO COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

ELECTRIC SWITCH.

To all whom it may concern x citizen. of the United States of America, and residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented a certain new and useful Improvement in Electric Switches, of which the following is a specification.

specification of Letters Patent.

Application filed December 1, 1913.

Patented Mari' 10, 1914. Serial No. 804,035.

ing abutment 32 here shown also in the form Be 1t known that I, lViLnUR G. PEET, a

l rection and by the lug 34 in the opposite direction, the arc subtended between these My invention relates to electric switches and particularly to switches for electric lamp sockets, the object of my invention being to provide an efficient and inexpensive either the on or off position of the double break switch mechanism especially adapted for pull sockets and affording both a quick make and a quick break of the switch contacts.

In the accompanying drawing, Figure l points being sullicient to permit the abutment end of the switch spring to be shifted by the yoke 32 across the axis of oscillation of the switch yoke 2G when the latter is in switch. The pull chain 18 serves to swingl the yoke 32 toward the stop lug 34. The

i spring 35 coiled on pin 27 engages the yoke 32 and tends constantly to swing it in the direction of standard 15. The tension of this spring may be regulated by displacing the angular head 36 of the pin from its rectangular seat in the button 13 and rotating in either direction, one end of the spring being engaged by said head in well understood manner.

On the lower arm of the abutment yoke 32, I mount a pivoted revolving stop piece perspective of the chain bell and its support.

In the embodiment of my invention here Q shown, my improved switch is mounted in a lamp socket having thc usual cap 10 and i shell 11, provided with insulating lining 12. The body of the socket comprises the customary insulating buttons 13 and 14 and;y

these are spaced apart by standards l5 and 16, the latter carrying a detachable bell 17 to guide the manually operated pull chain i 18. The button 14 carriesthe usual lamp shell contact 1S) and center contact (noti shown) the lamp circuit being here broken i through the shell contactalone by the switch. i

The switch terminals 20 and 2l are respectively connected to the wire terminal 22 and the clamping ring 23 which over-lies the base of the screw shell 19. The gap between the switch terminals is spanned in the on y position of the switch by a U-shaped metal strap 24 mounted on the end of, but insulated by non-conducting material 25, from the oscillating switch yoke 26. The latter is pivoted upon the pins 27 and 28, respecti vely engaged in the upper and lowerl buttons 'i3 and 14. To the stud 29 on the switch yoke 26,1oni: end of the switch spring 30 is secured. The other-end of the spring is en 37. To assure lightness of operation and freedom of movement, while at the same time preventing this stop piece from spinning under sudden impulse, I support it by means of a headed pin 38 passing up through the lower arm of the yoke 32, and mount on the pin between the head thereof and the yoke arm a lightl compressed coil spring 40. This spring ho ds the stop 37 in position while at the same time braking its rotation suflciently to prevent spinning.

The stop 41 against which the stop 37 inipinges may be formed in any suitable inanner. It is here shown as a raised shoulder on the u per face of the button 14. A deflecting s ioulder 42 is also provided to move the stop into inoperative Josition. As here shown` this shoulder is ormedby an upstandinfr flange on a strap 43 secured beneath tlie standard 16. The operation of the stop will be readily understood. \Vhen the oscillating abutment rests against standard 15, the stop piece 37 lies in the position 1 shown in Fig. 2. As the yoke 32 is swung gaged upon the stud 31 carried by the swing 1 over on the pull of the chain 18, the point 1/ at the one end ol the stop piece 37 impinges against the dellccting shoulder l2 and slides down into the recess 44. The lug -15 on thtl porcelain not only prevents too great dev6 lasthe yoke travels pastA the shoulder.

vlection-1 the l stop piece by the shoul-A its spring 35, the' other point w of the stop.

piece engages the face a of the shoulder Lll and slides out until halted by the face b of .the shoulder, The yoke 32 isthus halted in the position shown 1n .Upon the sncceeding pull ofthe switc chain, the point y of the stoppiece impin esagainst the vface c of `the lugfl and `is deected inwardly with the result that the oint is 'swung outu wardly lto the position shown in Fig. 5. onsequentlyjwhen the-pull chain is freed and `the yoke trayelstoward standard 15 againA under the' iniluence of vits spring '35 thefpoi'nt m lies' beyond the face b of the shoulder 41 and the stop piece is merely turned freely to the position shown in Figi Upon the succeeding pull of the chain the point y', of' the-stop piece is lbrought into .position to engage Vthefa'cea of shoulder 41' and slide into engagement with the stop face b of the shoulder lin like manneras just described, 'the'. cycle of Vpositions being identical for each end of the stop iece.

=With the foregoing exp anation .o'f the stop mechanism; theoperation of the switch is clear.` When'the vswitch is om the switch yoke v26' and the Vvabutment yoke 39. take the position shown-in Fig. 2. 0n the actuation of the pull chain, the-yoke 32 is moved'to/a position in which the attached end of'theswitch sprin 130 is slightly past` the--axis'of oscillationo yoke 26. inasmuch asy` the spring is placed` under considerable tension byv this movement, the switch yoke 26 'is at once swung over `with a snap action into'engagement withthe switch ter` minals 20 and 21 'and` thus 'completes the lemp circuit; As the v'chain is released, the yoke 32l travels backnnden the influence ci? spring35- to thelstopposition shown lin Fig'. 3.' But inasmucl'i-'asthisdoes not move the abutment end-of the spring past the axis of oscillation ofthe'sw'itch piece in its on l position,v the l latter remains inv engagement with the'switch terminal. 0n the next actuation of thepull chainthe yoke 32 is iirst moved toVI the position 'shown' in Fig. 5 (which swings the stop into-inoperative position) and then returns under the influence "of its spring 35 intofengagement'with the standardfl thus' shiftingY the yabutment end ot the switch'springpast the axis oftk os cillaticrn''of the switch piece., 'The switch piece is consequentlyzsnap'ped back into the of position shown `in Figi/,A24 The posi tion shown in Fig. 6 is that just prior to the full return of the abutment yoke 32 against the standard 15. The friction of the switch `terminals 20 and 21 issutoient to momen-- -tarily 4detain theswitch fyoire vaiiter thegnbnt 'lineages ment has passed the axis of oscillation. As soon as the yoke 32 hasjtouched lthe stand ard .15, the switch yoke,leavestheswitch terminals with a quick break under the pull out the switch spring 30.

This switch mechanism just described constitutes the main featurelof the' resent j A invention.` Itis believed however t at the. mountin of the chain bell on its standard is also specifically novel. The standardl rhas projecting from one side,"' as above explained, the lug 34.' Fitting above and befl low this lug, Iforlna ypair of clawse on one side the chain bell basel VOn the oppo'-' site side, I form av flange 17 with a bead 48 which springs over the edgefothe corriespending side of the standard 16." Thiseni l gagement need not be verystrong,4 since'the; bell lis held in place by thel-shello'i" the socket casing, in the assembledl condition.'

Various mod ications yofv the resent vde-Q` vice will readily suggest themse vesyand do not limit myselfY to theprecise form'- shown for the stop piece orthe particular i 4construction indicated for halting the switch `the* on. position of spring abutment in the switch. A ,Y

l `'claim as my inventionze l. A. switch'mechanismcomprising an os?f cillating switch piece, la switch. spring'orl actuating the same, a Iswitch spring abut-` ment movable to shift oneen'd-.of the'v switch. f1

switchpiece inl opposite directionsy manu, ally operated meansfor .moving saidabut` spring across the axis of oscillation ofthe -J ment in one4 direction andmeansyopera-tive only after alternate manual movements; of-Tl said 'abutment 1n one.directi'on.,k `for `'movzv endv ofsaid switch spring inaopposite di- -ingsaid abutment to shift-the abutment'V rection across the axis of nOscillation ofA the;v

switch piece.

a switch mechanismpnn oscillating `switch piece, a .switch 4spring?"operativel ,v

connected to oscillate the same, -a 'shiiitafhle1 abutment for one end of. thesspring, means 1 for shifting said 1abutment;in .oppositedi-p rections tomovethe `'abutting endof 'Athe past the yaxis ofosciilation of switch spring the switch iece, and meansgopeiativelyen-, gaging sai Aabutment tohold;` the same against operative movementin the one .di-l rection aiter alternate movements inthe iopff posits direction.

3. ln a switch mechanism,any-oscillating;

switch piece, a switchrdspring for 'actuating;.- the same, azshiftable abutmentorlone endy -w of said spring adaptedto. move the. a`but tiig 2 end ci saidswitch springin opposite, direc?.rvr

tions .across the axis lci osoillatieinof thei switch piece',` .manually eperated means` for shifting said abutment -inzone direction andv spring means for returning/it 1n Ithe otherdireations',` in combination withlstop menns y; ,agthe spring; actuated returnmov l the same,

ment of `said abutment before it has shifted the abutting end of the switch spring across the axis ot' oscillation of the switchpieec.

4i. In a switch mechanism, an oscillating switch piece, a switch spring t'or actuating the same, a shiftable abutment for one end of said spring adapted to move the abutting end of said switch spring in opposite direc tions .across the axis of oscillation of the switch piece, manually operated means for shifting said abutment in one direction and spring means for returning it in the other direction, in combination with stop means for intermittently halting the spring actuated return movement of said abutment before it has shifted the abutting end of the switch spring across the axis ot' oscillation of the switch piece. I

Ina switch mechanism, an oscillating switch piece, a switch spring for actuating the same, a shittable abutment for one end of said spring adapted to move the abutting end of said switch spring in opposite directions across the axis of oscillation of the switch piece, manually operated means for shifting said abutment in one direction and spring means for returning it in the other direction, in combination with stop means for halting the spring actuated return movement of said abutment before it has shifted the abutting end of the switch spring across the' axis of oscillation of the .switch piece, and means for rendering said stop inoperative on alternate spring actuated return movements of the switch spring abutment.

6. In a switch mechanism, an oscillating switch piece, a switch spring for actuating a shiftable abutment for one end of said spring adapted to move the abutting end of said switch s ring in opposite directions across the axis of oscillatlon of the switch piece, manually operated means for shifting said abutment in one direction and pring means for returning it in theother 1rection,. in combination withstop means for halting the spring actuated return movement of said abutment before it has shift-' ed the abutting end of the switch spring across the axis of oscillation of the switch piece, and means brought into action b' alternate manual operations of the switci spring abutment for rendering said stop means inoperative.

7. l'ii a switch mechanism, an oscillating switch piece, a spring for actuating the same, a shiftable abutment for one end ofthe said spring adapted to move the abutting end of said switch spring in opposite directions across the axis of oscillation of the switch piece, a spring for moving said abutment in the opposite direction, a stop mounted on said abutment, meansengaging said stop when the latter is in predetermined position with relation thereto and serving to halt the abutment dring its spring driven travel before it has shifted the abutting end ot the switch spring across the axis ot oscillation oi the switch piece.

S. ln a switch mechanism, an oscillating switch piece, a spring for actuating the saine. a shi'ltable abutment l'or olie end oiE the said spring ada ptcd to move the alu'itting end ot said switch spring in opposite directions across the axis of oscillation oi' the switch piece, a spring i'or moving said abutment in the opposite direction, a movable stop mounted on said abutment, fixed means engaging said stop when the latter is in piedetcrmincd position with relation thereto, and serving to halt thc abutment during its spring driven travel before it has shifted "the abutting end of the switch spring across the axis of oscillation of the switch piece.

9. In a switch mechamsm, an oscillating switch piece, a spring for actuating the same,

a shittable abutment for one end of the said spring adapted to move the abutting end ot' said switch spring in opposite lireetions across the axis of' oscillation of the switch piece, a spring for moving said abutment in the opposite direction, a movable stop mounted on said abutment, fixed means cngaging said stop when the latter is in predetermined position with relation thereto, and serving to` halt thc abutment during' lits` spring driven travel before it has shifted the abutting end of the switch spring across the axis of oscillation of the switch piece, together with means for engaging said stop on alternate manual operation of said abutment and serving to move the same into inoperative position.

I ,10. Inaswitch mechanism,a switch piece,

a switch spring one end of which operatively engages said switch piece, an abutment operatively engaged by the opposite end of said switch piece, said switch and abutment being pivotally mounted on a coinmon axis, means limiting the travel o'f` said switch piece'through an are on one side ot said axls, means limiting the travel ot' said abutment through an arc on the opposite Side of said axis, manually operated meansl for moving said abutment in one direction through its arc to shift the abutting end ot' the switch spring past said common axis of oscillation, spring means tor returning said abutment to shift said abutting end of the spring in opposite direction across said axis of oscillation, and an intermittently actingl stop halting said abut-ment during its springdriven travel before it has shifted the ahntting end of the switch spring across the axis of oscillation.

l1. In an electric pull switch, a standard having a lug projecting from one side thereof, a chain bell mounted thereon and having on one side a pair of claws engaging said standard .on opposite sides of-said lug and having on the other side a beaded flange de taehably enga ging the. corresponding side of vthe standard, substantially as described.

l2. In an electric switch, an oscillating Aswitch piece having the form of a yoke, n

strep ot' conducting .material bent over the closed end of the yoke and insulation nter posed between said strap and yoke to electrically insulate the same, substantially described.

13. In an electric switch, a pivotecl. switch spring abutment7 a stop piece pivoted there on, a lxed shouluer engaging said stop' piece in 1predeterminecl nosition and means for moving seid slop piece alternately into and out of engaging 1iosition` substantially do scribed. l

lll. ln, en electric switch. a pivotea switch spring abntmentgrstop piece pivoted thereon, a lined shonldeeengaging said stop in predetermined position, and means for turning said stop piece on its pivot to bring first one end and then the other end into engaging posi-tion, snbstantiallv as described.

l5. Infan electric switch, a pivotecl switch spring abutment, astop piece pivoted thereon, a lixecl stop shoulder together with lxed delleeting shoulders engaging said stop piece and serving to move the same alternately, into and out of position to engage said fixed stop shoulder onl successive oscillations of said abutment member.

ln testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses.

WlLBUR G. PRET. 1Witnesses.:

Gr. W. GOODRIDGE, GEORGE B. THOMAS.

@einen e?? eliminate-nt may1A he obtained for ve cents each, by addressing; the Commissioner o-tente, 

